Cholinesterase-Targeting microRNAs Identified in silico Affect Specific Biological Processes

Area of Science:

• Biochemistry
• Molecular Biology
• Genetics

Background:

• MicroRNAs (miRs) are key post-transcriptional regulators of gene expression.
• Cholinesterases, including butyrylcholinesterase (BChE) and acetylcholinesterase (AChE), play critical roles in various physiological processes.
• Dysregulation of cholinesterase activity is implicated in several neurological disorders.

Purpose of the Study:

• To identify and characterize microRNAs targeting different cholinesterase transcripts.
• To investigate the biological processes regulated by these microRNA-cholinesterase interactions.
• To explore the potential for targeted modulation of cholinesterase function via microRNAs.

Main Methods:

• Bioinformatic identification of microRNAs targeting 3'-untranslated regions of BChE, AChE-S, and AChE-R transcripts.
• Gene ontology analysis of experimentally validated targets of identified microRNAs.
• Cross-referencing of microRNA targets with known cholinesterase-related biological functions.

Main Results:

• Identified 244 microRNAs targeting cholinesterase transcripts: 116 for BChE, 47 for AChE-S, and 81 for AChE-R.
• Found overlapping microRNA regulation between AChE-S and AChE-R, and between AChE-R and BChE, but not between BChE and AChE-S.
• Discovered that microRNAs targeting BChE are involved in response to glucocorticoid stimulus, while those targeting AChE are linked to neuronal development and response to wounding, with AChE-R being particularly susceptible.

Conclusions:

• MicroRNA regulation exhibits selectivity towards specific cholinesterase splice variants, notably the rare AChE-R.
• Identified key biological processes, including neuronal development and response to stimuli, under post-transcriptional control by microRNAs targeting cholinesterases.
• Findings provide insights into microRNA-mediated regulation of cholinesterases and suggest potential therapeutic strategies for neurological conditions.